Supplemental restraint for auto-rack railroad car restraint system

ABSTRACT

A supplemental restraint for a primary vehicle restraint system for an auto-rack railroad car which reduces or eliminates movement of the vehicle in the auto-rack railroad car. The supplemental restraint is adapted to be positioned on a grating between the tire of the vehicle and the primary restraint. One embodiment of the supplemental restraint includes a body and an expander connected to the body. After the primary restraint is locked in place on the grating, the expander of the supplemental restraint is expanded. The expansion causes a more secure engagement between the tire and the primary restraint. This causes a high level of engagement between the tire and the primary restraint system indirectly through the supplemental restraint. The supplemental restraint also maintains a higher contact area on the tire regardless of the position of the primary restraint.

PRIORITY CLAIM

This application is a continuation-in-part of, claims priority to and the benefit of U.S. patent application Ser. No. 10/644,294 now U.S. Pat. No. 6,926,480, filed on Aug. 20, 2003, the entire contents of which is incorporated herein.

DESCRIPTION

The present invention relates in general to a supplemental restraint for an auto-rack railroad car, and more particularly to an improved supplemental restraint for a vehicle restraint system in an auto-rack railroad car which includes a grating mounted in an auto-rack railroad car and a primary restraint removably attachable to the grating to prevent the vehicle on the grating from moving.

BACKGROUND OF THE INVENTION

The railroad industry employs a variety of railroad cars for transporting products including vehicles such as automobiles and trucks. Auto-rack railroad cars transport newly-manufactured vehicles such as automobiles, vans, and trucks. Auto-rack railroad cars, known in the railroad industry as auto-rack cars, often travel thousands of miles through varying terrain. One typical type of auto-rack car is compartmented, having two or three floors or decks, two sidewalls, a pair of doors at each end, and a roof. Newly-manufactured vehicles are loaded into and unloaded from an auto-rack car for transport by a person (i.e., a loader) who drives the vehicles into or out of the auto-rack car. The loader also operates the vehicle restraint system that secures the vehicles in the auto-rack car.

One problem with auto-rack cars is the potential for damage to newly-manufactured vehicles which can occur in the auto-rack car due to the unwanted movement of one or more of the transported vehicles not adequately secured in the auto-rack car. Various restraint or anchoring systems have been developed for securing the vehicles transported in auto-rack cars to prevent movement or shifting of those vehicles during transportation. One type of system employs a “tie down” restraint using chains connected to steel runners in the support surface of the auto-rack car. A ratchet tool is usually required to secure these chains taut. Certain types of these systems utilize winch mechanisms and harnesses which must be fitted over the vehicle tires to restrain movement of the vehicle.

To solve these problems and other disadvantages of prior vehicle restraint systems, a vehicle-restraint or wheel-chocking system for restraining vehicles transported on auto-rack cars was developed. This system is disclosed in detail in U.S. Pat. Nos. 5,239,933 and 5,302,063. This wheel-chocking or restraint system includes a plurality of chock members (referred to herein as “primary restraints”) detachably secured to gratings provided on a support surface of the auto-rack car at defined locations. This wheel chocking system was designed to utilize four primary restraints, one associated with each of the four wheels of a vehicle being transported, to provide a balanced restraint relative to the center of gravity of the vehicle and eliminate the effects of longitudinal forces caused by impacts and lateral forces induced by rocking of the auto-rack railroad car in transit.

As illustrated in FIGS. 2 and 3, the primary restraint 32 of this system includes an angled face-plate 34 for alignment with, and restraining movement of, a tire 40 of an associated wheel 42 of the vehicle 44 positioned on the grating 38. The angled face-plate 34 is vertically adjustable to a lower position (shown in FIGS. 2 and 3), an intermediate position, and an upper position (shown in phantom in FIG. 2) to provide chocking for different tire sizes. The angled face-plate 34 is attached to a load-transmitting member 36 which is adapted to transfer the load applied to the face-plate 34 to the grating 38. The primary restraint 32 also includes a paddle-shaped restraining member 39 which contacts the inside surface of the tire to prevent lateral shifting of the vehicle.

While the primary restraint system described above (and described in more detail in U.S. Pat. Nos. 5,239,933 and 5,302,063) has been widely adapted and generally relatively effective in restraining vehicles, such as conventional automobiles, vans, trucks and certain SUVs, a problem has developed in relation to new types of vehicles, currently called “cross-over” vehicles. Cross-over vehicles generally include a truck or SUV-type body mounted on an automobile-type frame. Such vehicles currently include the PONTIAC VIBE, the TOYOTA MATRIX and other similar vehicles. These cross-over vehicles have a higher center of gravity and a much lower curb weight than conventional automobiles and SUV's, but include relatively low fenders, moldings and bumpers (compared to certain trucks, vans and SUVs). When cross-over vehicles are loaded in an auto-rack railroad car on the grating of the vehicle restraint system described above, it has been found that the restraint system and, particularly, the primary restraints are not adequately holding these vehicles in place or preventing the movement of the vehicles to a minimum desired level of movement.

This lack of restraint occurs, at least in part, because the adjustable member or face-plate 34 of the restraint cannot be mounted or positioned in the upmost or highest position because the adjustable member will or may interfere with or contact the bumper, fender or molding of the cross-over vehicle as illustrated in phantom in FIG. 2. It should be appreciated that vehicle manufacturers provide extremely particular instructions which warn against any contact or engagement between anything in the auto-rack railroad cars and the new vehicles because the vehicle manufacturers desire to deliver the vehicles to dealers and customers in “perfect” condition. Any damage, such as scratches or dents to the fenders, bumpers, moldings, trim or other parts of the vehicle, could prevent or inhibit a customer from purchasing or taking delivery of the vehicle. Accordingly, vehicle manufacturers prefer that the adjustable member of the primary restraint of the above system not contact and not come close to the fenders, bumpers, trim or moldings of the newly manufactured vehicles as illustrated in the lower position in FIG. 2. The adjustable member must accordingly be placed in the lowest or, at best, the intermediate position when securing certain vehicles such as cross-over vehicles in the auto-rack cars as illustrated in the lowest position in FIG. 2. This causes the face-plate to engage the tire at a lower point on the tire, and accordingly, the vehicle is more likely to be able to jump over or hop the primary restraint if the vehicle is exposed to sufficient forces as illustrated in FIG. 3.

A related problem which can also cause the vehicle to be more likely to jump over or hop the primary restraint is that the primary restraint is sometimes not placed as close to the tire as potentially possible as also illustrated in FIG. 2. One reason for this is that the loaders are in a hurry when they load the vehicles into the auto-rack railroad cars. When the loaders are in a hurry, they tend to place the primary restraint in a position close to the tire without substantially maneuvering the primary restraint to the closest possible position to the tire. This positioning can sometimes leave a substantial gap between the primary restraint and the tire. This gap can allow the vehicle to move and in fact build up speed causing the vehicle to hop or jump the primary restraints.

A similar problem arises because the primary restraint may need to be positioned or spaced at a distance from the tire because the tire is at a position on the grating or relative to the grating that does not allow the primary restraint to be placed in engagement with the tire. The primary restraint must be placed a distance of up to three-quarters of an inch away from the tire due to the position of the grating members or rungs relative to the tire and the locking members of the primary restraint. Again, in such situations, a gap is created allowing the vehicle to hop or jump the primary restraints. This is also illustrated in FIG. 2 where the size of the gap between the tire and the face-plate is approximately half the distance between the rungs of the grating.

This gap problem is compounded because certain vehicle manufacturers require that certain vehicles be transported with the transmission in neutral to prevent damage to the vehicle such as to the transmission of the vehicle. In neutral, the transmission does not stop the vehicles from moving.

It should also be appreciated that the vehicles may jump or hop the primary restraints at a variety of different times. During movement of the train including sudden stoppage of the auto-rack railroad car or severe deceleration of the auto-rack railroad car. Such instances can include sudden stopping for emergencies alone or in combination with slack action. The amount of force on the vehicles being transported relative to the auto-rack car can cause the vehicles to hop or jump over the primary restraints, especially if the tire is engaged by the face-plate at a relatively low point, if the primary restraint is spaced from the tire or if the face-plate is at a low position and spaced from the tire.

More importantly, during loading or unloading in a railroad yard, the auto-rack railroad cars are coupled and decoupled with other railroad cars on a regular basis. During the coupling action, severe jolts of up to 8 to 10 miles per hour can be incurred by the auto-rack railroad car even though regulations (and signs in the yards and on the railroad cars) limit the speed to no more than 4 miles per hour. These jolts can cause extreme force on the vehicles relative to the railroad cars and, thus, cause the vehicles to jump or hop the primary restraints especially if the tire is engaged by the face-plate at a relatively low point or if the primary restraint is spaced from the tire. When a vehicle hops or jumps a restraint, the vehicle may engage another vehicle in the railroad car or one or more end doors of the railroad car. There have been significant recorded instances of this type of damage to vehicles and especially cross-over vehicles in auto-rack railroad cars in railroad yards in recent years. As indicated above, such damage to the vehicles necessitates the replacement of the damaged part and potentially other parts of the vehicle. This damage is extremely expensive for vehicle manufacturers which charge the railroads for such damage.

This problem is compounded for vehicle manufacturers when the vehicle damaged is a specially ordered vehicle (instead of a stock vehicle) for a specific customer. The customer can wait one, two, three or more months for a specially ordered vehicle. If the specially ordered vehicle is damaged in transit, the customer may need to wait for another specially ordered vehicle to be manufactured. This can harm the dealer's and manufacturer's businesses.

Additionally, the railroads often incur significant expenses because the end doors of the auto-rack railroad cars need to be repaired. During such repairs, these cars must be taken out of service.

The primary restraints are also often damaged when the vehicles jump the primary restraints or run into the primary restraints. The railroads have to replace these damaged primary restraints or have these damaged primary restraints repaired. This causes additional expenses which are incurred by the railroads.

It should thus be recognized that while the restraint system described above, which has been widely commercially implemented, provides certain restraint for vehicles being transported in auto-rack cars, in certain instances this restraint system does not adequately protect the vehicles or prevent the movement of the vehicles and thus prevent damage to the vehicles, the auto-rack railroad cars and the primary restraints. The automobile industry and the railroad industry have sought improvements for this restraint system. Accordingly, there is a need for an improvement to the restraint system described above which is easy to install and remove and assists the primary restraints which are adapted to be attached to the gratings to hold the vehicles more securely.

SUMMARY OF THE INVENTION

The present invention solves the above problems by providing a supplemental or auxiliary restraint for an auto-rack railroad car which reduces or eliminates the movement of the vehicles being transported in the auto-rack car. The present invention provides a supplemental restraint which is adapted to co-act with the restraint system and, particularly, with each of the primary restraints to more fully secure a vehicle being transported in an auto-rack railroad car.

The supplemental restraint of the present invention is adapted to be positioned between the tire of the vehicle and the primary restraint. In one embodiment, the supplemental restraint includes a first or tire engaging surface or member, a second or primary restraint engaging surface or member and an expander or adjuster which causes the movement of the first or tire engaging surface or member and the second or primary restraint engaging surface or member between a non-expanded position and at least one expanded position. In the non-expanded position, the first or tire engaging surface or member is closer to the second or primary restraint engaging surface or member, and in the expanded position, the first or tire engaging surface or member is further away from the second or primary restraint engaging surface or member. Moving the supplemental restraint into the expanded position causes the first or tire engaging surface or member to engage the tire and the second or primary restraint engaging surface or member to engage the face-plate of the primary restraint. This securely locks the tire in place. It should be appreciated that the present invention may have one or more intermediate expanded positions which compensate for the different size gaps between the tire and the face-plate of the primary restraint.

In one embodiment of the present invention, the supplemental restraint of the present invention is adapted to be positioned on the grating between the tire of the vehicle and the primary restraint. More specifically, after a vehicle is loaded in an auto-rack car on the grating, the supplemental restraint of the present invention is first positioned directly adjacent to and in engagement with the tire. The primary restraint system is then positioned adjacent to the opposite side of the supplemental restraint. After the primary restraint is locked in place on the grating, the supplemental restraint, or an expandable portion thereof, is expanded. The expansion causes a more secure engagement between the tire and the primary restraint. This causes a high level of engagement between the tire and the restraint system indirectly through the supplemental restraint of the present invention. This prevents movement of the tires of the vehicles and, thus, facilitates a more effective overall vehicle restraint system.

In one embodiment, the supplemental restraint of the present invention includes a body and an expander connected to the body. The body includes a mounting member adapted to be positioned on the grating of the restraint system. The body also includes a tire-engaging member or tire engager connected to and extending upwardly from the mounting member. The tire-engaging member or tire engager is curved in a suitable manner for engagement with the treaded surface of the tire. The tire engager is formed to engage a significant portion of the tire, and specifically to extend between the tire and the adjacent fender, molding or trim in one embodiment, the expander is connected to the body and, in one preferred embodiment, connected to the tire engager. The expander is adapted to transversely extend from the tire engager and cause the tire engager to more securely engage the tire. In one embodiment, the outer surface or primary restraint engaging surface of the expander is adapted to engage the face-plate of the primary restraint when in an expanded position. In an alternative embodiment, the body or part of the body is suitably expandable.

In one embodiment, the expander includes a moveable adjustment or expanding member adapted to co-act with a base connected to the tire engager. The adjusting or expanding member in one embodiment moves, such as by rotating from an unexpanded or closed position (i.e., closer to the tire engager), to a fully expanded or fully open position (i.e., further from the tire engager). In one embodiment, the expander is adapted to be positioned in one, or a plurality of, partially expanded positions between the closed or non-expanded position and the fully open or fully expanded position, and is adapted to be releaseably locked in each such expanded position.

In one embodiment, the supplemental restraint includes at least one handle which is connected to the movable adjusting or expanding member of the expander. The handle enables a user to move the movable adjusting or expanding member between the non-expanded and fully expanded positions (including any partially expanded positions there between). In one embodiment, two or more handles are connected to the movable adjusting or expanding member for this purpose. In a further embodiment, the handle(s) are removably attached to the movable member. It should be appreciated that other suitable arrangements are possible for the handle and the movement of the movable adjusting or expanding member between the expanded and non-expanded positions in accordance with the present invention.

It should also be appreciated that when the movable adjustment or expanding member is moved from the non-expanded position to the fully expanded position (or one of the intermediate expanded positions), this causes the mounting member and the tire engager of the supplemental restraint to move closer to the tire and, therefore, eliminate any gap, space or slack between the tire and the tire engager.

It should be appreciated that a supplemental restraint of the present invention is preferably used with each primary restraint system which is employed to secure the vehicle in place. For certain vehicles, only two primary restraints and two supplemental restraints (on opposing tires on opposite sides of the vehicle) are employed, and, for most vehicles, four primary restraints and four supplemental restraints are employed (i.e., one for each tire).

It is, therefore, an advantage of the present invention to provide a supplemental restraint for a restraint system for a vehicle transported in an auto-rack railroad car.

Other objects, features and advantages of the present invention will be apparent from the following detailed disclosure, taken in conjunction with the accompanying sheets of drawings, wherein like reference numerals refer to like parts.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an auto-rack railroad car adapted to transport a plurality of vehicles.

FIG. 2 is a side view of a vehicle and known restraint system in an auto-rack railroad car illustrating the grating of the restraint system on which the vehicle rests, the primary restraint releasably attached to the grating, wherein the primary restraint is illustrated with the face-plate in the lowest position and in phantom in the highest position which would interfere with the fender of the vehicle.

FIG. 3 is a side view of a vehicle which has jumped the primary restraint having the face-plate in the lowest position.

FIG. 4 is a fragmentary top perspective view of the supplemental restraint of one embodiment of the present invention positioned on the grating between the tire of the vehicle and the primary restraint, wherein the supplemental restraint is illustrated in the non-expanded position.

FIG. 5 is a fragmentary side elevation view of the supplemental restraint of the embodiment of FIG. 4 mounted on the grating between the tire of the vehicle and the primary restraint, wherein the supplemental restraint is illustrated in the non-expanded position.

FIG. 6 is a fragmentary side elevation view of the supplemental restraint of the embodiment of FIG. 4 mounted on the grating between the tire of the vehicle and the primary restraint, wherein the supplemental restraint is illustrated in an expanded position such that the tire engaging surface is in engagement with the tire and the primary restraint engaging surface is in engagement with the face-plate of the primary restraint.

FIG. 7 is a side elevation view of the supplemental restraint of the embodiment of FIG. 4 illustrated in the non-expanded position, and having a portion broken away to facilitate illustration of the base of the expander.

FIG. 8 is a side elevation view of the supplemental restraint of the embodiment of FIG. 4 illustrated in the fully expanded position, and having a portion broken away to facilitate illustration of the base of the expander.

FIG. 9 is a cross-sectional view taken substantially through the expander of in the non-expanded position

FIG. 10 is a cross-sectional view taken substantially through the expander in the expanded position.

FIG. 11 is an enlarged exploded front-perspective view of the supplemental restraint of the embodiment of FIG. 4 illustrating the adjusting or expanding member of the expander and a handle for the expanding member.

FIG. 12 is an exploded rear-perspective view of the supplemental restraint of the embodiment of FIG. 4 illustrating the base of the expander, the adjusting member of the expander and a handle for the expanding member.

FIG. 13 is a side elevation view of the supplemental restraint of one embodiment of the present invention illustrating the pad attached to the bottom of the mounting member.

FIG. 14 is a cross-sectional view of an alternative embodiment of the present invention.

FIG. 15 is an exploded front perspective view of an alternative embodiment of the supplemental restraint including an alternative expander having an alternative base, an alternative expanding member, an alternative handle, an alternative spring and a spacer.

FIG. 16 is a rear view of the base of the expander of the supplemental restraint of FIG. 15.

FIG. 17 is a side view of the base of the expander of the supplemental restraint of FIG. 15.

FIG. 18 is a cross-sectional view of the expander of the supplemental restraint of FIG. 15 in a non-expanded position.

FIG. 19 is a cross-sectional view of the expander of the supplemental restraint of FIG. 15 in an expanded position.

FIG. 20 is a fragmentary rear view of the tire engager and the base of the expander of the supplemental restraint of FIG. 15.

FIG. 21 is an enlarged perspective view of the expanding member of the expander of the supplemental restraint of FIG. 15.

FIG. 22 is an enlarged perspective view of the base of the expander of the supplemental restraint of FIG. 15.

FIG. 23 is a front perspective view of a supplemental restraint storage container having a portion of the front wall broken away to show the bottom wall and one of the drainage holes.

FIG. 24 is a front perspective view of a supplemental restraint storage bracket.

FIG. 25 is a side view of the supplemental restraint storage bracket of FIG. 24.

FIG. 26 is a rear elevation view of the supplemental restraint storage bracket of FIG. 24.

DETAILED DESCRIPTION OF THE INVENTION

Referring now to the drawings, and, particularly, to FIG. 1, a typical auto-rack railroad car 10 includes a frame 12 supported by trucks 14, each of which have several wheels 16 which roll along railroad tracks 18. The frame 12 supports two sidewalls 20 and a roof 22. The auto-rack car 10 includes a pair of co-acting clamshell doors 24 and 26 mounted on each end of the auto-rack car 10. The doors 24 and 26 are opened to facilitate the loading and unloading of vehicles into and out of the auto-rack car 10 and are closed during transport or storage of the vehicles.

The sidewalls 20 include a series of steel vertical posts 28 which are mounted on, and extend upwardly from, the frame 12. The roof 22 is mounted on, and supported by, these vertical posts. The vertical posts are evenly spaced along the entire length of both sidewalls 20 of the auto-rack car 10. A plurality of rectangular galvanized steel sidewall panels 30 which extend horizontally and are vertically spaced apart are mounted between each pair of vertical posts 28. These sidewall panels are supported at their corners by brackets (not shown) that are suitably secured to the vertical posts. The average sidewall panel has a multiplicity of round sidewall panel holes 23. These sidewall panel holes 23 provide the auto-rack car with natural light as well as proper ventilation. Proper ventilation prevents harm from the toxic vehicle fumes to the person or persons loading or unloading the vehicles into or out of the auto-rack car.

The auto-rack car may be a tri-level car having first, second and third levels. Normally, eighteen passenger vehicles can be transported in a tri-level auto-rack car, six on each level. The auto-rack car can also have two levels for vehicles instead of three. The bi-level auto-rack car has a lower level and an upper level. The bi-level auto-rack car is generally used to transport larger vehicles, such as vans, mini-vans, pickup trucks, four-by-four and cross-over vehicles. The bi-level auto-rack car can usually transport twelve of these vehicles, six on each level. The auto-rack car may also be a single-level car.

Referring now to FIGS. 4 to 12, the supplemental restraint of one embodiment of the present invention, generally indicated by numerical 50, is illustrated in the non-expanded position in FIGS. 4, 5, 7 and 9 and in the fully expanded position in FIGS. 6, 8 and 10. The supplemental restraint 50 of the illustrated embodiment of the present invention includes a body 52 and an expander or expansion member 54 connected to the body 52.

In the illustrated embodiment, the body 52 includes a mounting member 56 adapted to be positioned on the grating 38 of the restraint system. The mounting member 56 includes a forward section 56 a and a rear section 56 b. The rear section 56 b is suitably sized and shaped to extend under the primary restraint when in the mounted position, as illustrated in FIGS. 5 and 6. This provides substantial support for the supplemental restraint 50 and prevents the backward rotation of the supplemental restraint 50 when the supplemental restraint system is engaged by the tire 40 or the tire applies force to the supplemental restraint 50.

In one embodiment, a rubber mounting pad 102 shown in FIG. 13 is suitably attached to the bottom of the mounting member 56 to increase the frictional engagement between the bottom of the mounting member 56 and the grating 38. Since in one embodiment, the grating 38 and the mounting member 56, are both metal, the rubber pad increases the friction between the bottom of the mounting member 56 and the grating 38 and reduces unwanted sliding of the supplemental restraint 50 relative to the grating 38. The mounting pad also functions to reduce or eliminate wear between the supplemental restraint and the grating.

In the illustrated embodiment, the body 52 includes a tire-engaging member or tire engager 58 extending upwardly from the mounting member 56. The tire-engaging member or tire engager 58 is curved in a suitable manner or has a concave shape for engagement with the treaded surface of the vehicle tire 40 which keeps the profile close to the tire and away from the fenders, body panels and trim of the vehicle. As best illustrated in FIG. 12, in one embodiment of the body 52, the body and/or the tire engager includes a plurality of spaced-apart braces or supports such as braces or supports 60 a, 60 b and 60 c which provide structural rigidity to the tire engager and the entire body of the supplemental restraint. Other suitable configurations are contemplated by the present invention. It should be appreciated that the tire engaging surface or member can extend along a significant portion of the tire between the tire and an adjacent fender, molding or trim.

The expander 54 in the illustrated embodiment is connected to the tire engager 58. The expander 54 is operable to extend substantially transversely from the tire engager 58 as illustrated in FIG. 6 to cause the tire engager 58 to more securely engage the tire 40. The expander 54 is adapted to engage the face-plate 34 of the primary restraint 32 when in an expanded position. More specifically, the expander in the illustrated embodiment includes a primary restraint engaging or surface member adapted to engage at least a portion of the face-plate of the primary restraint.

In the illustrated embodiment, the expander 54 includes a moveable adjusting or expanding member 70 adapted to co-act with a base 72 connected to the tire engager 58. The adjusting or expanding member 70 in the illustrated embodiment is adapted to move counter-clockwise by rotating from an unexpanded position, as illustrated in FIGS. 5, 7 and 9, to a fully expanded position, as illustrated in FIGS. 6, 8 and 10, and to move clockwise from the fully expanded position to the non-expanded position. It should be appreciated that the arrangement of movement could be reversed in an alternative embodiment. In the illustrated embodiment, the expander 54 is also adapted to be positioned in each of a plurality of partially expanded positions between the non-expanded position and the fully expanded position and is adapted to be releaseably locked in each such position.

In the illustrated embodiment, the supplemental restraint 50 includes a removable handle 98 which is connected to the movable adjusting or expanding member 70 of the expander 54. The handle 98 enables a user to move the movable adjusting or expanding member between the non-expanded and fully expanded position (including to any of the partially expanded positions there between). In one embodiment, the handle is removably attached to the expanding member 70. It should be appreciated that other suitable arrangements are possible for the handle and the movement of the movable adjusting or expanding member between the expanded and non-expanded positions in accordance with the present invention.

In the illustrated embodiment, the expanding member 70 includes a plurality of steps or mating surfaces 71 a, 71 b, 71 c and 71 d which are formed and sized to co-act or mate with steps or mating surfaces 73 a, 73 b, 73 c and 73 d of the base 72. This arrangement of co-acting steps cause the expanding member 70 to transversely extend away from the base 72 when the expanding member is rotated in a counter-clockwise manner.

In the illustrated embodiment, the expanding member 70 is attached to the base 72 by a biasing assembly including a bolt 74, a first washer 76, a spring 78, a second washer 80 and a nut 82. The bolt 74 is positioned through an opening 75 defined in the tire engager 58 or the base 72 of the tire engager and through an opening 77 defined in the expanding member 70. The first washer 76 engages the lip 79 of the expanding member which defines opening 77, the spring 78 is journaled about the bolt and has one end engaging the first washer 76, the second washer 80 engages the other end of the spring and the nut 82 is secured to the bolt 74. This arrangement causes the expanding member 70 to be biased toward the base 72 to a desired extent. It should be appreciated that other suitable biasing apparatus or arrangements may be implemented in accordance with the present invention.

The expander 54 of the illustrated embodiment also includes a guide mechanism including a guide member or pin 84 and a guide area or slot 86 adapted to receive the guide member or pin 84. This mechanism or arrangement assists in controlling the movement or rotation of the expanding member 70 relative to the base 72 and prevents the expanding member from rotating too far such as past ninety degrees in the illustrated embodiment. It should be appreciated that other suitable guide mechanisms can be employed in the present invention. For instance a pipe or tube can be positioned adjacent to the spring to prevent the rotation past ninety degrees.

The expander 54 further includes a suitable releasable locking assembly or mechanism adapted to releasably lock the expanding member 70 relative to the base 72 in each of the positions including the non-expanded position, the fully expanded position, and the partially expanded positions. In the illustrated embodiment, the releasable locking assembly or mechanism includes a locking member or pin 88 and a plurality of locking receptacles or notches 90 a to 90 q each adapted to receive the locking pin 88. In one embodiment, the locking pin 88 is a ball nosed spring loaded plunger which is biased toward the expanding member 70. In the illustrated embodiment, (a) when the pin 88 is in receptacle 90 a (as in FIG. 10), the expanding member is in the fully expanded position, (b) when the pin 88 is in the receptacle 90 q (as in FIG. 9), the expanding member is in the non-expanded position, and (c) when the pin 88 is in any of the receptacles 90 b to 90 r such as 90 j, the expanding member is in a partially expanded position. FIG. 14 illustrates pin 88 extending from the expanding member 70 and the notch 90 in base 72. It should be appreciated that other suitable locking or positioning mechanisms can be employed in the present invention. For instance, the base and the expanding member can respectively include co-acting teeth or ridges, peaks and valleys, or other locking or stopping structures. These structures can be on one or more corresponding surfaces of the base and expanding member.

To move the expanding member relative to the base, an operator uses the handle to disengage the locking pin from the locking notch by applying a transverse force (against the spring or biasing member) and then moves or rotates the expanding member in the desired direction to the desired position. The operator then releases the handle, and the biasing assembly co-acts with the spring plunger or locking pin 88 to cause the locking pin to engage the appropriate locking notch to releasably lock the engaging member relative to the base.

In one embodiment, the body, the expanding member of the expander and the handle are each made from a cast aluminum. The body, expanding member, and handle can alternatively be made from a nylon, Acrylonitrile-butadiene-styrene (ABS), Dicyclopentadiene (DCPD) or polycarbonate. It should further be appreciated that the entire supplemental restraint including the body, expander and handle could be made from any one or more suitable materials, including other metals, plastics, ceramics and composite materials or combinations thereof.

In one embodiment, the body including the mounting member, tire engager and the base of the expander are integrally formed. It should be appreciated that one or more of these members could be separately formed and suitably connected to the other members.

It should also be appreciated that the supplemental restraint 50 is preferably used with each primary restraint system which is employed to secure the vehicle in place. For certain vehicles, only two primary restraints and two supplemental restraints (on opposing tires on opposite sides of the vehicle) are employed and, for most vehicles, four primary restraints and four supplemental restraints are employed (i.e., one for each tire).

It should also be appreciated that when the movable adjusting or expanding member is moved from the non-expanded position to the fully expanded position (or one of the intermediate expanded positions) the mounting member and the tire engager of the supplemental restraint move closer to the tire, thereby, eliminating any gap, space or slack between the tire and the tire engager as illustrated in FIGS. 5 and 6.

It should thus be appreciated that in one embodiment, the present invention includes the combination of the primary restraint and the supplemental restraint. It should further be appreciated that in one embodiment, the present invention includes the combination of the primary restraint, the grating and the supplemental restraint.

It should further be appreciated that the present invention includes a method of securing a vehicle in an auto-rack railroad car which includes placing a tire engaging member and a primary restraint engaging member between a tire and a primary restraint and expanding or moving at least one of said members away from the other member to engage the tire and the primary restraint.

It should further be appreciated that the supplemental restraint of the present invention may be adapted to be used in conjunction with a primary restraint in other transport mechanism besides auto rack railroad cars.

It should be appreciated that, when not in use, the supplemental restraints can be stored in a suitable storage box or rack.

Another alternative embodiment of the supplemental restraint 150 is illustrated in FIGS. 15 to 22. As best illustrated in FIG. 15, the supplemental restraint 150 includes a body 152 having a tire-engaging member or tire engager 158 extending upwardly from a mounting member 156. Although not shown, the body may include a pad extending downwardly from the mounting member as illustrated in FIG. 13. The tire-engager and mounting member are integrally formed such as by molding from a suitable plastic as further discussed below; however, it should be appreciated that they could be separately formed and attached together. The mounting member or the tire engager may include suitable molding relief areas such as relief areas 151 a and 151 b which facilitate cooling of the body during the molding process.

The tire-engaging member or tire engager 158 is curved in a suitable manner or has a concave shape for engagement with the treaded surface of the vehicle tire. This keeps the profile of the tire engager close to the tire and away from the fenders, body panels and trim of the vehicle. It should be appreciated that the tire engaging surface or member can extend along a significant portion of the tire between the tire and an adjacent fender, molding or trim.

As seen in FIG. 20, the illustrated embodiment of the tire engager 158 includes a plurality of spaced-apart braces or supports 160 a, 160 b and 160 c which provide structural rigidity for the tire engager 158 as well as the entire body 152 of the supplemental restraint 150.

In this illustrated embodiment, the expander 154 includes a base 172 connected to the tire engager 158 and a moveable adjusting or expanding member 170 adapted to co-act with the base 172. The base 172 in this embodiment is connected to the rear side of the tire engager 158 above the braces or supports 160 a, 160 b and 160 c as shown in FIG. 20. The base 172 includes at least one and preferably a plurality of locking arms 190 a and 190 b as best illustrated in FIGS. 15, 16, 20 and 22. The locking arms are positioned to engage the braces or supports 160 a, 160 b and 160 c on the rear side of the tire engager 158 as shown in FIG. 20. This prevents rotation of the base 172 relative to the tire engager 158. The base 172 also includes flat locking surfaces 192 a, 192 b and 192 c which respectively engage the inner walls of the lip of the rear section of the tire engager to prevent rotation of the base 172 relative to the tire engager 158. Thus, it should be appreciated that in the preferred embodiment the tire engager, the base and the expanding member are separately formed. The base could be alternatively molded integrally with the tire-engager; however, in such case two molds would have to be made for right and left hand expanding members for the right and left hand sides of the vehicles. In such case, the base and the expanding member would be molded in right hand and left hand versions to facilitate movement of the handle in the downward direction to be the expanding direction and movement of the handle in the upward direction to be in the non-expanding direction.

It should be appreciated that as illustrated in FIGS. 18 and 19, at least part of the expander 154 is operable to extend substantially transversely from the tire engager 158 to cause the tire engager 158 to more securely engage the tire. This part of the expander 154 is adapted to engage the face-plate of the primary restraint when in an expanded position. The expander 154 thus includes a primary restraint engaging part of surface or member adapted to engage at least a portion of the face-plate of the primary restraint.

More specifically, the movable adjusting or expanding member 170 in the illustrated embodiment is adapted to move counter-clockwise by rotating from an unexpanded position as illustrated in FIG. 18 to a fully expanded position as illustrated in FIG. 19, and to move clockwise from the fully expanded position to the non-expanded position. It should be appreciated that the arrangement of movement is reversed in the alternative embodiment for the opposite side of the vehicle. In the illustrated embodiment, the expander 154 is also adapted to be positioned in each of a plurality of partially expanded positions between the non-expanded position and the fully expanded position and is adapted to be releaseably locked in each such position as further discussed below.

In the illustrated embodiment and as specifically illustrated in FIGS. 15 and 21, the supplemental restraint 150 includes a handle 198 connected to and extending from the movable adjusting or expanding member 170 of the expander 154. The handle 198 enables a user to move the movable adjusting or expanding member 170 to and between the non-expanded and fully expanded position (including to any of the partially expanded positions therebetween). In one embodiment, the handle 198 is integrally formed with the expanding member 170. It should be appreciated that other suitable arrangements or configuration can be employed for the handle and for the movement of the movable adjusting or expanding member 170 to and between the expanded and non-expanded positions in accordance with the present invention.

In the embodiment illustrated in FIGS. 15 to 22 and as specifically illustrated in FIGS. 15, 21 and 22, the expanding member 170 includes a plurality of quadrants or steps such as steps 171 a, 171 b, 171 c and 171 d, and the base 172 includes a plurality of quadrants or steps such as steps 173 a, 173 b, 173 c and 173 d. The steps 171 a, 171 b, 171 c and 171 d of the expanding member are configured and sized to co-act or mate with the respective steps 173 a, 173 b, 173 c and 173 d of the base 172. This configuration forms part of the locking mechanism of this embodiment of the supplemental restraint of the present invention. More specifically, each quadrant or step 171 a, 171 b, 171 c, and 171 d of the expanding member and each quadrant or step 173 a, 173 b, 173 c and 173 d of the base 172 includes a plurality of sub-steps or engagement members. The sub-steps on step 171 a are adapted to engage the sub-steps on step 173 a, the sub-steps on step 171 b are adapted to engage the sub-steps on step 173 b, the sub-steps on step 171 c are adapted to engage the sub-steps on step 173 c, and the sub-steps on step 171 d are adapted to engage the sub-steps on step 173 d.

This configuration provides multiple locking engagements or engagement points at each corresponding, co-acting or opposing pair of steps of the base 172 and expanding member 170. More specifically, (a) in the non-expanded position, each sub-step of each corresponding pair of steps of the base 172 and expanding member 170 are in engagement, (b) in the fully expanded position, at least one sub-step of each corresponding pair of steps of the base 172 and expanding member 170 are in engagement, and (c) in each one of the partially expanded positions, a plurality of sub-steps of each corresponding pair of steps of the base 172 and expanding member 170 are in engagement. It should be appreciated that number of sub-steps, engagements or engagement points between the corresponding steps may vary in accordance with the present invention. It should also be appreciated that the number of corresponding pairs of quadrants or steps may vary in accordance with the present invention. It should also be appreciated that the shape of the quadrants or steps and/or of the sub-steps, engagements or engagement points may vary in accordance with the present invention. It should further be appreciated that the number of corresponding pairs of steps having sub-steps may vary in accordance with the present invention. In this regard, while the illustrated embodiment has four pairs of corresponding steps with sub-steps, it should be appreciated that the present invention contemplates having at least one pair of corresponding steps with sub-steps, other suitable engagement members or engagement points.

The steps and sub-steps act as a suitable releasable locking assembly or mechanism adapted to releasably lock the expanding member 170 relative to the base 172 in each of the positions including the non-expanded position, the fully expanded position, and the partially expanded positions.

As illustrated in FIGS. 15, 18, and 19, the expanding member 170 is attached to the base 172 by a biasing assembly or biasing mechanism including a bolt 174, a spacer 183, a wave spring 178, a washer 180, and a nut 182. The bolt 174 extends through an opening defined by an inner wall 192 of the tire engager 158, an opening defined by an inner wall 194 of the base 172 and through an opening defined by an inner wall 196 of the expanding member 170. The spring 178 is journaled about the bolt and has one end engaging the washer 178, and the other end engaging the lip 171. The nut 182 is secured to the bolt 174. This arrangement causes the expanding member 170 to be biased toward the base 172 to a desired extent. It should be appreciated that other suitable biasing apparatus, mechanism or arrangements may be implemented in accordance with the present invention.

The spacer 183 is positioned inside the spring 178 and journaled around the bolt 174. The spacer 183 prevents the over expansion of the expanding member 170 further away from the base 172 after the nut 182 is set to the proper position. It should be appreciated that the spacer could alternatively be positioned outside of the spring. It should also be appreciated that other suitable mechanisms may be employed to prevent the over expansion of the expander.

The expander in this illustrated embodiment does not include a guide mechanism as described above. However, it should be appreciated that a suitable guide mechanism may also be employed in this embodiment of the present invention.

To move the expanding member relative to the base, an operator uses the handle 198 to disengage the sub-steps on the steps of the expanding member from the sub-steps on the steps of the base by applying a transverse force (against the spring or biasing member) and then moves or rotates the expanding member in the desired direction to the desired position. The operator then releases the handle, and the biasing assembly or mechanism causes the steps of the expanding member to engage the corresponding steps of the base to releasably lock the expanding member relative to the base.

In this embodiment, the body including the mounting member and the tire engager, the base and the expanding member and the handle are each made and specifically is injection molded from a suitable glass filled nylon. It should be appreciated that the supplemental restraint including the body, expander and handle could be made from any one or more suitable materials, including other plastics, metals, ceramics and composite materials or combinations thereof.

As discussed above, in the embodiment of FIGS. 15 to 22, the body 152 including the mounting member 156 and the tire engager 158 are integrally formed, the base 172 is separately formed, and the expanding member 170 is separately formed. It should be appreciated that the base could be integrally formed with the tire engager.

The supplemental restraint of the present invention will be employed when the vehicles are in the auto-rack railroad car. When the auto-rack railroad cars do not have vehicles or the vehicles are being loaded or unloaded into the auto-rack car, it is preferable that the supplemental restraints are maintained in a secure out of the way position to avoid damage. Accordingly, the present invention contemplates storage containers and brackets for the supplemental restraint.

Referring now to FIG. 23, one embodiment of the supplemental restraint storage container 300 is shown. This supplemental restraint storage container 300 includes a base wall 302 and four upstanding walls connected to the base wall. More specifically, the container 300 includes a front wall 304, a back wall 306 and sidewalls 308 and 310 connected to the base wall 302. The side and front walls include a lip 312 which is configured to prevent damage to the vehicle car doors which contact the supplemental restraint container 300. The rear wall includes or defines one or more mounting holes 314 which facilitate attachment of the supplemental restraint container 300 to the sidewall panels of the auto-rack railroad car. The bottom wall 302 includes or defines one or more drainage holes 316 to allow drainage of water. The supplemental restraint container 300 is configured and sized to be mounted on a sidewall panel of the auto-rack car using suitable fasteners such as the fasteners disclosed in U.S. Pat. No. 5,415,108. Various other types of suitable fasteners can be used. The supplemental restraint container 300 is sized to hold one or a plurality of supplemental restraints. This maintains the supplemental restraints out of the way during loading and uploading of the vehicles, and additionally prevents the supplemental restraints from moving and thus being damaged during movement of an unloaded or partially loaded auto-rack railroad car. The supplemental restraint container may be made from any suitable material such as plastics, metals, other materials or combinations thereof. One such material is a combination of recycled tire rubber and plastic.

The present invention also contemplates a supplemental restraint storage bracket for holding the supplemental restraint. Referring now to FIGS. 24, 25 and 26, one embodiment of the supplemental restraint storage bracket 350 includes a mounting member 352 and a restraint support 354 connected to the mounting member 352. The mounting member 352 includes or defines mounting notches 356 and 358 which are sized to received a suitable fastener, such as the fastener described in U.S. Pat. No. 5,415,108. The fasteners are used to attach the mounting member to the auto-rack sidewall panel. The supplemental restraint, and particularly the mounting member 156 of the supplemental restraint is placed on the restraint storage bracket 354 to secure the supplemental restraint to the auto rack sidewall panel when the supplemental restraint is not in use. The supplemental restraint bracket could be a metal stamping or molded from a polymer such as HDPE (high density polyethylene), ABS (Acrylonitrile-butadiene-styrene), nylon, urethane, rubber or a glass-filled formulation of the above, or any other suitable material.

It will be understood that modifications and variations may be effected without departing from the scope of the novel concepts of the present invention, and it is understood that this application is to be limited only by the scope of the claims. 

1. An auto-rack railroad car supplemental restraint for an auto-rack railroad car having a primary restraint system for a vehicle, said primary restraint system including a grating and a primary restraint adapted to be releaseably attached to the grating, said supplemental restraint comprising: a tire engager configured to be positioned between a tire of the vehicle on the grating and the primary restraint on the grating; and an expander including a base connected to the tire engager, said base including a plurality of steps, at least one of the steps of the base including a plurality of sub-steps, and an expanding member movable to a non-expanded position and at least one expanded position relative to the base, said expanding member including a plurality of steps, at least one of said steps of the expanding member including a plurality of sub-steps configured to co-act with the sub-steps of said step of the base.
 2. The auto-rack railroad car supplemental restraint of claim 1, wherein the tire engager is formed with a curvature for engaging the tire.
 3. The auto-rack railroad car supplemental restraint of claim 1, wherein the base is integrally formed with the tire engager.
 4. The auto-rack railroad car supplemental restraint of claim 1, which includes at least one handle connected to the expanding member.
 5. The auto-rack railroad car supplemental restraint of claim 1, wherein the expander includes a biasing mechanism operable to bias the expanding member toward the base.
 6. The auto-rack railroad car supplemental restraint of claim 5, wherein the biasing mechanism includes a spring loaded plunger.
 7. The auto-rack railroad car supplemental restraint of claim 1, wherein the expanding member is movable to at least one partially expanded position.
 8. The auto-rack railroad car supplemental restraint of claim 1, wherein the expanding member is movable to each of a plurality of partially expanded positions.
 9. The auto-rack railroad car supplemental restraint of claim 1, wherein the tire engager extends upwardly from a mounting member.
 10. The auto-rack railroad car supplemental restraint of claim 9, which includes a pad extending from a bottom surface of the mounting member.
 11. An auto-rack railroad car supplemental restraint for an auto-rack railroad car having a primary restraint system for a vehicle, said primary restraint system including a grating and a primary restraint adapted to be releaseably attached to the grating, said supplemental restraint comprising: a tire engager configured to be positioned between a tire of the vehicle on the grating and the primary restraint on the grating; and an expander including a base connected to the tire engager, said base including a plurality of steps, a plurality of said steps each including a plurality of sub-steps, and an expanding member movable to a non-expanded position and at least one expanded position relative to the base, said expanding member including a plurality of steps, each of a plurality of said steps including a plurality of sub-steps configured to co-act with the sub-steps of said steps of the base.
 12. The auto-rack railroad car supplemental restraint of claim 11, wherein the tire engager is formed with a curvature for engaging the tire.
 13. The auto-rack railroad car supplemental restraint of claim 11, wherein the base is integrally formed with the tire engager.
 14. The auto-rack railroad car supplemental restraint of claim 11, which includes at least one handle connected to the expanding member.
 15. The auto-rack railroad car supplemental restraint of claim 11, wherein the expander includes a biasing mechanism operable to bias the expanding member toward the base.
 16. The auto-rack railroad car supplemental restraint of claim 15, wherein the biasing mechanism includes a spring loaded plunger.
 17. The auto-rack railroad car supplemental restraint of claim 11, wherein the expanding member is movable to at least one partially expanded position.
 18. The auto-rack railroad car supplemental restraint of claim 11, wherein the expanding member is movable to each of a plurality of partially expanded positions.
 19. The auto-rack railroad car supplemental restraint of claim 11, wherein the tire engager extends upwardly from a mounting member.
 20. The auto-rack railroad car supplemental restraint of claim 19, which includes a pad extending from a bottom surface of the mounting member.
 21. The auto-rack railroad car supplemental restraint of claim 11, wherein each of said steps of the base includes a plurality of sub-steps, and each said step of the expanding member includes a plurality of sub-steps configured to co-act with the sub-steps of said steps of the base.
 22. An auto-rack railroad car supplemental restraint for an auto-rack railroad car having a primary restraint system for a vehicle, said primary restraint system including a grating and a primary restraint adapted to be releaseably attached to the grating, said supplemental restraint comprising: a tire engaging member; and a base connected to the tire engaging member, said base including a plurality of steps; and an expanding member movable between a non-expanded position and at least one expanded position, wherein in the non-expanded position, the tire engaging member is closer to the expanding member, and in the expanded position, the tire engaging member is further away from the expanding member, said expanding member including a plurality of steps configured to mate with the steps of the base, wherein at least one of the steps of the base and a corresponding one of the steps of the expanding member having a plurality of engagement points when said steps are mated.
 23. The auto-rack railroad car supplemental restraint of claim 22, wherein the tire engaging member is formed with a curvature for engaging the tire.
 24. The auto-rack railroad car supplemental restraint of claim 22, wherein the base is integrally formed with the tire engaging member.
 25. The auto-rack railroad car supplemental restraint of claim 22, which includes at least one handle connected to the expanding member.
 26. The auto-rack railroad car supplemental restraint of claim 22, which includes a biasing mechanism operable to bias the expanding member toward the base.
 27. The auto-rack railroad car supplemental restraint of claim 26, wherein the biasing mechanism includes a spring loaded plunger.
 28. The auto-rack railroad car supplemental restraint of claim 22, wherein the expanding member is movable to at least one partially expanded position.
 29. The auto-rack railroad car supplemental restraint of claim 22, wherein the expanding member is movable to each of a plurality of partially expanded positions.
 30. The auto-rack railroad car supplemental restraint of claim 22, wherein a plurality of the steps of the base and a corresponding plurality of steps of the expanding member have a plurality of engagement points when said steps are mated.
 31. The auto-rack railroad car supplemental restraint of claim 22, wherein each of the steps of the base and each corresponding step of the expanding member have a plurality of engagement points when said steps are mated. 